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1. (WO1997019012) APPARATUS AND METHOD FOR CONTROLLING WEB SPEED
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/019012 International Application No.: PCT/US1996/018621
Publication Date: 29.05.1997 International Filing Date: 15.11.1996
Chapter 2 Demand Filed: 12.06.1997
IPC:
B65H 20/34 (2006.01) ,B65H 23/16 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
H
HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
20
Advancing webs
30
Arrangements for accumulating surplus web
32
by making loops
34
with rollers
B PERFORMING OPERATIONS; TRANSPORTING
65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
H
HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
23
Registering, tensioning, smoothing, or guiding webs
04
longitudinally
16
by weighted or spring-pressed movable bars or rollers
Applicants:
FMC CORPORATION [US/US]; 200 E. Randolph Drive Chicago, IL 60601, US
Inventors:
VAN DEN STEEN, Freddy; BE
DE SMEDT, Eric, M.; BE
VERBEKE, Wim; BE
Agent:
CALDWELL, John, W.; Woodcock Washburn Kurtz Mackiewicz & Norris 46th floor One Liberty Place Philadelphia, PA 19103, US
Priority Data:
08/560,42517.11.1995US
Title (EN) APPARATUS AND METHOD FOR CONTROLLING WEB SPEED
(FR) APPAREIL ET PROCEDE DE COMMANDE DE VITESSE DE BANDE
Abstract:
(EN) There is provided an apparatus for controlling the infeed speed of a bag making machine (12). In one embodiment, the nip roll speed is changed from a variable speed to a fixed speed after a cycle interrupt occurs. Once a dancer arm (19) returns to an upward position, the nip roll speed changes back to the variable speed. In another embodiment, the nip roll speed is approximately equal to an average line speed and the dancer (18) is trimmed to correct the speed of the nip rolls (16). There is also disclosed a method for controlling the infeed speed.
(FR) Appareil de commande de la vitesse d'alimentation d'une machine de fabrication de sacs (12). Selon un mode de réalisation, la vitesse des cylindres de pression est modifiée, passant d'une vitesse variable à une vitesse fixe après une interruption de cycle. Lorsqu'un bras de tension (19) est revenu en position verticale, la vitesse des cylindres de pression redevient la vitesse variable. Selon un autre mode de réalisation, la vitesse des cylindres de pression est approximativement égale à une vitesse linéaire moyenne et le dispositif de tension (18) est réglé pour corriger la vitesse des cylindres de pression (16). Est également décrit un procédé de commande de la vitesse d'alimentation.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0861203JP2000500423 CA2236742AU1997010567